"Fields" documentation bug

[Simon Josefsson]

The "Fields" node in the Elisp info file is not accessible from the
top Elisp menu.

The "Fields" node also mentions two functions "end-of-line-or-field"
and "beginning-of-line-or-field" that doesn't exists in Emacs 21.1.

The "Motion by text lines" node contains documentation for
"end-of-line" and "beginning-of-line" that aren't consistent with C-h
f for those functions (the info version doesn't mention the fields
restriction).

Also, I could imagine that alot of elisp code was written assuming
that `end-of-line' and `beginning-of-line' worked as they did in Emacs
20, has all such places been reviewed/fixed?